Law Supply - Units and Conversion Factors

Law Supply, Inc.
Web Page - Units and Conversion Factors

To Convert From	To	MultiplyBy
ACCELERATION
feet per second per second	centimeters per second per second meters per second per second	30.480 0.30480
free fall (standard)	meters per second per second	9.8067
kilometers per hour per second	centimeters per second per second feet per second per second meters per second squared	27.778 0.9113 0.27778
ANGULAR
circumferences	radians	6.283
degrees	grade radians	1.111 0.017453
degrees per second	radians per second revolutions per minute revolutions per second	0.017453 0.16667 0.0027778
minutes	radians	0.002909
radians	degrees (angular)	57.296
radians per second	degrees per second (angular) revolutions per minute	57.296 9.549
revolutions per minute	degrees per second radians per second	6 0.01472
CANDLEPOWER
foot candles	lumens per square meter	10.764
CAPACITY, DISPLACEMENT
cubic inches per revolution	liters per revolution milliliters per revolution	0.01639 16.39
DENSITY, MASS/VOLUME
grams per cubic centimeter	kilograms per cubic meter pounds per cubic inch pounds per cubic foot	0.001 0.03613 62.427
pounds-mass per cubic foot	kilograms per cubic meter	16.018
pounds per cubic foot	grams per cubic centimeter kilograms per cubic meter pounds per cubic inch	0.016018 16.018 0.0005787
poundsper cubic inch	grams per cubic centimeter kilograms per cubic meter newtons per meter	27.68 27.680 1728
ENERGY AND WORK
British thermal units	joules	1055
British thermal units per second	watts	1.055
British thermal units per minute	horsepower watts	0.02358 17.58
British thermal units per hour	watts	0.2931
calories	British thermal units foot-pounds joules kilogram-meters watt-hours	0.0039683 3.088 4.1868 0.4265 0.001163
ergs	joules	0.0000001
foot-pounds-force	British thermal units calories horsepower hours joules kilocalories kilogram-force meters kilowatt hours	0.001285 0.3238 0.0000005050 1.3558 0.0003238 0.13825 0.0000003766
horsepower	British thermal units per minute foot-pounds-force per minute foot-pounds-force per second kilocalories per minute kilowatts horsepower (metric) watts	42.43 33000 550 10.69 0.7457 1.0139 745.7
horsepower-boiler	British thermal units per horse kilowatts pounds of water evaporated per hour at 212°F	33479 9.8095 34.5
horsepower hours	British thermal units foot-pounds-force joules kilocalories kilogram-force meters kilowatt hours	2.545 1980000 2684500 641.5 273200 0.7457
joules	British thermal units calories foot-pounds-force watt-hours	0.0009484 0.2390 0.73756 0.00027778
kilowatts	British thermal units per minute foot-pounds-force per minute foot-pounds-force per second horsepower kilocalories per minute	56.92 44254 737.6 1.3410 14.34
kilowatt hours	British thermal units foot-pounds-force horsepower hours joules kilocalories kilograms-force meters	3413 2655000 1.3410 3.600000 860 367100
pounds-force	kilograms-force newtons	0.45359 4.4482
tons of refrigeration	British thermal units per hour British thermal units per 24 hours	12000 288000
watts	British thermal units per minute foot-pounds-force per second foot-pounds-force per minute horsepower joules per second kilocalories per minute	0.05691 0.73756 44.254 0.0013410 1.0 0.014340
watt-hours	British thermal units foot-pounds-force horsepower hours joules kilocalories kilograms-force-meters	3.413 2665 0.0013410 3600 0.8604 367.10
There are several definitions of the Btu, and the values of applicable and/or equivalent factors may vary slightly depending on the definition used. For this reason, three or four significant figures are given on this page, and in most cases provide a value near to most definitions of the Btu. However, as always in making calculations of high accuracy, one should reference the appropriate lists and handbooks of standards.
ENERGY/AREA TIME
Btu/cubic feet second	watts per square meter	11348
Btu/cubic feet hour	watts per square meter	3.1525
FLOW RATE MASS
pounds per minute	kilograms per minute	0.4536
FLOW RATE VOLUME
cubic feet per minute	cubic centimeters per second cubic meters per second cubic meters per hour liters per second gallons (US) per second pounds of water per minute (at 68°F)	471.9 0.0004719 1.699 0.4719 0.2247 62.32
cubic feet per second	cubic meters per second cubic meters per minute cubic meters per hour gallons (US) per minute gallons (imp) per hour liters	0.028317 1.699 101.9 448.8 646315 28.32
cubic meters per hour	cubic meters per minute cubic meters per second gallons (US) per minute liters per second	0.016667 0.00027778 4.4033 0.27778
cubic meters per second	cubic meters per hour gallons (US) per minute	3600 15850
gallons (US) per minute	cubic meters per second cubic meters per minute cubic meters per hour cubic feet per second cubic feet per hour liters per second	0.000063090 0.0037854 0.2771 0.002228 8.021 0.06309
liters per minute	cubic feet per second liters per second gallons (US) per second gallons (US) per minute gallons (imp) per minute	0.0005885 0.01667 0.004403 0.26418 0.003666
liters per second	cubic meters per second cubic meters per minute cubic meters per hour liters per minute gallons (US) per minute gallons (imp) per minute	0.001 0.06 3.600 60 15.85 13.20
pounds of water per minute at 60°F	cubic centimeters per second cubic feet per second cubic meters per minute kilograms per second	7.5667 0.0002675 0.00045398 0.0075599
standard cubic feet per minute	cubic meters per hour at STP liters per second at STP	1.6957 0.47103
stokes	square feet per second square meters per second	0.001076 0.0001
tons (short) of water per 24 hours at 60°F	cubic feet per hour cubic meters per hour gallons (US) per minute pounds of water per hour	1.338 0.03789 0.1668 83.333
FORCE
dynes	newtons	0.00001
grams-force	newtons	0.0098066
kilograms-force	newtons pounds-force	9.8066 2.2046
kiloponds	newtons kilograms-force pounds-force poundals kips	9.807 1 2.2046 70.932 0.002205
kips	newtons kilograms-force pounds-force poundal kilopond	4448 453.6 1000 32174 453.6
grams-force per centimeter	newtons per meter pounds-force per inch	98.07 0.005600
kilograms-force per meter	newtons pounds-force per foot	9.8066 0.6721
newtons	dynes kilograms-force poundals pounds-force	100000 0.10197 7.2330 0.2248
poundals	newtons	0.13826
pounds-force	newtons	4.448
POWER
Btu/hour	watt	0.2931
Btu/second	watt	1055
Horsepower	kilowatt	0.746
PRESSURE AND STRESS
atmosphere	bars centimeters of mercury at 32F feet of water at 68F inches of mercury at 32F kilograms-force per square centimeter kilograms-force per square meter kilopascals pounds-force per square inch tons-force (short) per square foot torr	1.01325 76.0 33.96 29.921 1.0332 103322 101.325 14.696 1.0581 760
bars	kilopascals	100
centimeters of mercury	atmospheres bars feet of water at 68°F inches of water at 68°F kilograms-force per square centimeter pounds-force per square inch torr	0.013158 0.01333 0.4468 5.362 0.19337 27.85 10
feet of water (at 68°F)	atmospheres bars inches of mercury (at 0°C) kilograms-force per square centimeter kilopascals pounds-force per square inch pounds-force per square foot	0.02945 0.02984 0.8811 0.03042 2.984 0.4328 62.32
inches of mercury at 0°C	atmospheres (standard) bars feet of water at 68°F inches of water at 68°F kilograms-force per square centimeter kilograms-force per square meter kilopascals millimeters of mercury pounds-force per square foot pounds-force per square inch	0.00342 0.033864 1.135 13.62 0.034532 345.32 3.3864 25.40 70.73 0.4912
inches of water at 68°F	atmosphere bars inches of mercury kilograms-force per square centimeter kilopascals ounces-force per square inch pounds-force per square foot pounds-force per square inch	0.002454 0.002487 0.07342 0.002535 0.2487 0.5770 5.193 0.03606
kilograms-force per square centimeter	atmospheres bars feet of water at 68°F inches of mercury at 0°C kilopascals pounds-force per square foot pounds-force per square inch	0.9678 0.98066 32.87 28.96 98.066 2048 14.223
kilograms-force per square millimeter	kilograms-force per square meter megapascals	1000000 9.8066
kilograms per square meter	pascals	9.807
kilopascals	dynes per square centimeter feet of water at 68°F inches of mercury at 32°F inches of water at 68°F kilograms-force per square centimeter pascals pounds-force per square inch	10000 0.3351 0.2953 4.021 0.010197 1000 0.1450
kips per square inch	kilopascals kilograms-force per square centimeter bars pounds per square inch	6894.8 70.307 68.94 1000
megapascals	kilograms-force per square millimeter kilograms-force per square centimeter kilopascals pascals pounds-force per square inch	0.10197 10.197 1000 1000000 145.0
millibars	pascals	100
millimeters of mercury at 0°C	bars feet of water at 68°F inches of mercury inches of water at 68°F kilograms per square centimeter pascals pounds per square inch	0.0013332 0.004680 0.03937 0.53616 0.0013595 133.32 0.0193368
ounces-force per square inch	grams-force per square centimeter pascals pounds-force per square inch	4.395 43.1 0.06250
pascals	bars dynes per square centimeter grams-force per square centimeter kilograms-force per square centimeter kilopascals newtons per square meter pounds-force per square inch	0.00001 10.0 0.010197 0.000010197 0.001 1.0 0.0001450
poise	centipoises pascal-seconds pound-force-seconds per square foot pounds per foot-second	100 0.1000 0.0020886 0.06721
pounds-force per square foot	feet of water at 68°F kilograms-force per square centimeter kilopascals pascals pounds-force per square inch	0.01605 0.0004882 0.0047880 47.880 0.0069444
pounds-force per square inch	atmospheres feet of water at 68°F inches of water at 68°F inches of mercury at 0°F kilograms force per square centimeter kilopascals	0.06805 2.311 27.73 2.036 0.07031 6.8948
pounds per square foot	kilograms per square meter	4.8824
pounds per square inch	pascals kilopascals megapascals	6895 6.895 0.006895
THERMAL CONDUCTIVITY
Btu ^. inch ^.hour ^.feet^{2 .}°F	watt per meter² °K	0.1442
TORQUE: BENDING MOMENT
pound feet	newton meters	1.356
kilogram meters	newton meters	9.807
VELOCITY
centimeters per second	feet per second feet per minute miles per hour kilometers per hour meters per minute	0.03281 1.9685 0.02237 0.03600 0.60000
feet per minute	centimeters per second kilometers per hour meters per minute meters per second miles per hour	0.5080 0.01829 0.30480 0.00508 0.01136
feet per second	centimeters per second kilometers per hour meters per minute meters per second miles per hour	30.480 1.097 18.29 0.30480 0.6818
international knots	meters per second miles per hour	0.5144 1.1516
kilometers per hour	centimeters per second feet per second feet per minute international knots meters per minute meters per second miles per hour	27.778 0.9113 54.68 0.53996 16.667 0.27778 0.6214
kilometers per second	miles per minute	37.28
meters per minute	centimeters per second feet per minute feet per second kilometers per hour miles per hour	1.6667 3.2808 0.05468 0.0600 0.03728
meters per second	feet per minute feet per second kilometers per hour kilometers per minute miles per hour miles per minute	196.8 3.281 3.600 0.0600 2.237 0.03728
miles per hour	centimeters per second feet per minute feet per second international knots kilometers per hour meters per minute	44.70 88 1.4667 0.8690 1.6093 26.82
WATER HARDNESS
grains per gallon (imp)	grams per cubic meter kilograms per cubic meter parts per million by weight in water	14.25 0.01425 14.25
grains per gallon (US)	grams per cubic meter kilograms per cubic meter parts per million by weight in water pounds per million gallons	17.118 0.017118 17.118 142.9
grains per liter	grains per US gallon parts per million by mass weight in water pounds per cubic foot pounds per 1000 gallons (US)	58.417 1000 0.0622427 8.3544
milligrams per liter	parts per million	1.0
parts per million by mass	grains per gallon (US) at 60°F grains per gallon (imp) at 62°F grams per cubic meter at 15°C milligrams per liter pounds per million gallons (US) at 60°F	0.0583 0.0700 0.9991 1.0 8.328

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Last updated 03/19/2005
This information is industrial standard and is for reference only.